Stefano Gattei is Assistant Professor at the IMT Institute for Advanced Studies, Italy and Sidney Edelstein Fellow at the Chemical Heritage Foundation, Philadelphia, Pennsylvania. He has been working extensively on contemporary issues in the philosophy of science (Karl Popper's critical rationalism, Thomas Kuhn, the dynamics of theory-change and conceptual change, the incommensurability thesis, relativism) and on the history of early-modern astronomy and cosmology (especially Johannes Kepler and Galileo Galilei). He is the author of Thomas Kuhn's Linguistic Turn and the Legacy of Logical Posit...